ok...
My FF has a very old set of Sachs shocks with an unknown spring rate. I have taken a look and cannot easily determine what the existing spring rates are. There are no visible markings that I can find.
so, given the known corner weights and the known motion ratios, how can I choose a spring rate to establish a new baseline so I can start to tune the suspension?
What ever spring rates I have, are very soft and just not suitable for what I do (autocross) I am planning on purchasing a new set of shocks, but I need to calculate a baseline setup.
what is the accepted practice? From the searches I have done it appears to be a matter of personal preference, but I need a baseline before I can figure out my personal preference.